Tuesday is expected to be the last warm day of the week for San Diego County as a cold storm system makes its way to Southern California, the National Weather Service said.
The low-pressure system is expected to bring showers late Thursday through Friday, and other rounds of rain are possible on Saturday and early next week, the NWS said.
The first signs of the storm will show up as cloudy skies on Wednesday, NBC 7 Meteorologist Greg Bledsoe said. The heaviest rain is on track to arrive between late Thursday and Friday morning, although there is uncertainty in the storm’s movements, and the timing or rainfall amounts could change.
As of Tuesday, anticipated rainfall totals for the storm’s duration are expected to range from 1.25-1.5 inches near the coast to 1.5-2.5 inches in the mountains. For the deserts, amounts range from one-half to one inch.
Who ordered the rain?👀 An incoming system will bring measurable rainfall to potentially the entire region late this week. Precipitation will begin as early as Thursday, increasing Friday. Note: higher terrain, generally above 6000ft, will see snowfall Friday and Saturday. pic.twitter.com/rG2XqeX1wY
— NWS San Diego (@NWSSanDiego) November 11, 2025
From Tuesday to Friday, temperatures will drop about 20 degrees, according to the NWS. Temperatures will fall into the 60s for the coast and inland valleys by the end of the week with the incoming rain.
Despite the plummeting temperatures, the weather system is not cold enough to bring the first snow of the season to San Diego’s mountains.
Wednesday’s temperatures:
- COAST: partly sunny – 72
- VALLEY: partly sunny – 78
- MOUNTAINS – partly sunny – 72
- DESERTS – partly sunny – 88
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